Trolley suspension clamp



June 24, 1930. JOHNSTQN ET AL TROLLEY SUSPENSION CLAMPv Filed Jan.v 25, 1928 fano/l5 771.66 f

l www Y V llrertveilteddummee244, 193570 LYA'NNIJOHNSTQN AND'ER'NCISA vTICE, on CINCINNATI;oIIIdAssIeNoRs To THE jtnnnc'rRIc RAILWAII EQUIPMENT QO'MPANY,

)HON @20H10 TnoLInYfsnsPnNsIoN CI'IAMI` M y Y Minimum-md-.Ianuary 25, 192S. "seria1f1i0-24a421, v, y

' l object `of this invention-is to provide. av trolley Wire` clamp "having jaws hinged. to"

one another actuatableby *a* single nut for Vclamping' engagement Withthe trolley Wire', l `Another/object of this invention iste pro- Vide atrolley clampthaft maybe rassembled at the factory' and shippedfas a' unitgto 'theV placelofr 'use so that vone A'Workman ':neayilvk@ a'.completeinstallation AAnother, ob'ect 'of this'inventionV to pro'- vilde atrolley Wire clampthatisly structurally adapted to the use'r of ,thinl clamping' jaws ,whereby ample clearance is obtainedfor the*- 'trolleyWh'eeL y f, I .y I V Another objectof this jinventionisto'profrictionfprevents. Wear or'1 th'e; jawsgand translates the=stressonthegnut into Aclamping actio'nof the'jaws on thegtrolleyV Wire'. i i

These and other objectsare attained byl V25. the means describedv hereinfand disclosed in, e

' @Wheel from; cutting into the, suspension Y clamp. fllheflan'ge is provided on; its linden-. f surfacel with an' arcuate seat 26 Whichvrestsff f ,e

the accompanying drawings',:iii-Which:y

- Fig., 1 isa ysdeelevationV ofa 'trolley-,clamp I operatively embodying this* invention mounted von a hanger. j 30 on line 2er- 2 of Fig-.1. Fig." 3 is afragmental sectionalfview simj ilar 'tofFig-.v27showing the device in an open position. d i

' ..Therinsulating hangeriO-has,associated with it threadedfstudll-l-:and is secured tol akjsupp'ort412 /byvany suitable meanssuch y bolts 13 v-'I`hethreaded-stud llis-received in a .threaded perforation 14'forrned' itsupper end With a angel Whichabuts- ,e the insulating hanger l0 landfat ,its lowerl Li5 endy with amutilated onseini-globul'ar head 17;k The shank of the-stern is threaded and receives a nut-18 which contacts a loose, col- Fig.' 2Sisl a fragmental sectionaly yieyv taken'l- 'sectional View taken on' line'l v.lugs 29;:and'30 oftleoppositev y, ,L` l Afterthefjaws 22 land23f-havebeenas i sides and ofthe 'Washer orcollar`V are v Inkachinedto provide smooth'y finished` surf faces. -Therlower side 43 isfflat'and contacts;H

the flangesZO and'2l of the jaws,- Which are n g 3 ist,.dishedorghollowed out andcontacts the Y rtmgh or unnished,lwhilethe upperfside 44 oF CINCINNATI, oIrIofAfcon-ronnf under, vunfinished,v surface of the clamping" T nut 1 8.-` il.Byinterposing anishedcollarfor Washer between the, rough por* uniinished lsur- Vfaces of the clamping nut and jaws V'the frictionl is reduced toi a `minimum fand a better? seatingofall parts is obtained. 'Thejaws;

lice for vboth. The jaw-22 'isy substantially'- Lshapedgin crosssection and extendsubvstanti'allyy straight :downwardly fromv l"the an'ge20 to its lowernlo'stedge 24. `The jaw is' provided .with a perforation 25fthrough 'i IQ which the-headv-'lk partiallyv extends'. ,'The

provision ofl the perforation-'25 throughl which the lhead 17 may partially extend. re-f' lducesthe,crosssection-of the jawsto a inini-v c mum therebyjallowing-'ample clearancetor 75 y f `.22 and 23V are identicalfin construction. y Wherefore adescriptionlofone jaWWillsuf-/ i the trolley Wheell andjpreventinglrthe on andlfis-actuated about?y the 'semi-globular: head 17. O-n'cne side of the seat. 26the f j awnis'provided with ahingelug-z27`throughf 1:

Whieha perforatioiil28fextends, andon'thef other sidejof the yseat with a'pair of spaced@y i 'hinge .lugls29 andB() throughyvliich extend"y y perforation'sll. f Theperforati`onsl- 28 and:

31 are injaiial alignment'and'fthespace32f 1 between lugs 29 and 30l-is slightlyflarger than .the Width ofthe lug 27:30 that wienl of yone :jawy v'enters the space- 32 betweenj the 2,8 "and 31.- :The pin isrelati'velylonger tersa recessl36 formed inthe head ,17,see-

y Fig. 4. .This'r'e'cess 3 6y provides a pairV 0i -lf ,shoulders 37.* a`nd 38 Whichare .adapted-'td y 'j v, 'Y .1 'contact-,adjacent the end of thepinL33,to;y '100' 5 l f provide pins-,38 and 34 from being` displaced.

tory Hand shippedasa unit to the place the stemV so'that the j aws22 and 23 maybe betweenfthe jaws and the nlflt*4 returned to the lower end of the stemV t`ofclamp the j awsl upon the ,wire 40,'asfshowngiln Fig, 2. l Suit-` x able' notches -,f fgrooves" or? the like V41.' may be j tormed inthe jlower Vendsy 24 Vot'thejaws so:

that the' jaws nia-y more readily and morec securelyvgriprthe'trolley'wire between them.Y

' ly stationary Vwhile, the nutflS slides thereoinf This will cause l'all of the wear to take place l .on the washer 19 and not'on the j awsthere-V E by prolonging theflifeof-'the'said jaws and. vibration of the .jaws'cannotresult in't'urn-f ingand looseningthe nut,VV The* smooth o r'` 4 inished surfac'esjofftheloose or Yfloating colfV lar '19'A permits free lrotation .of the clamp- .nut .18 and allowsfall the strain von. the, cla'mping nut' tojbejtranslated. into clamp-x 'Ying eiect. ofthe jaws on'gthe trolley wire.: The relative :thinnessliof the jaws should" Inf use the collar 19 remains substantiale f b'ef notedV whereby ample clearance" is threaded stud dependingftherefromj 'a threadedstem received Ybyjthe stud, a :semi-l" l V globular-:heard' on theend ofthe stem, av pair 'of clamping `j aws resting onthefsemi-glob'- jaws to prevent y'ty/"ear onl the? `j aws and to .ingfla semiglobular head 'i' threadedly .re- 42S ceived by; the stud,l a pair of Ahingedly con-y A 'nectedclampingjp-j aws carried.- byY the ysemi- 'globuliar'head5thef Vjawsbeingprovided with larcuate seats lwhereby'they f may .beV actufy 1 ated about fthe? head; clamping nut thread! edliy 'received bythe Stemma adaptedvt'o be actuatedV toward'the -jawsffor'f clampingl the -jaws vvon a trolley wire, Vand a loose mem'-v 1 ber *between-theY Vclamping 'nut' .andv awsl limited movementof thestem 15 x relativetofthe'jawsQZand 2 3.` After the `pins have been mounted in' place the ends o t' [the perforati'ons' 3l inthe -lugsSOare Inutilated,' as Vshown atr39, to reduce the1diam-'- :eters of the `perforations andto prevent the nut into clamping to prevent wear on the jawsand-topermitfv free rotation of the clamping nut.

3. In. adevice of the class described the Y l on the semiglobular head, each jawhavin'g a plurality fot perforated hingelugs 'in `axial alignment,` the perforated lugs beingY aligned with the semieglobular head, thewhead jhav-v ingQormedV therein fa recess whereby apair of shoulders areormed onthefhead and a Ypair ofwhingelpins extending `through the algne,djperitorated hinge` lugs, one ofthe pins extendingintofthe recess inthe head v andjcontacting the shoulders on the head tof o provide limitedmovement o f the Y stem and i. j

clamping jaws.

4. In a device of the classv describedtheil. I

combinationfof' a threaded stem .having "al head `'formed at .one end," apair of clamps Y pending therefronngjeach jaw Ybeing of' ay relativelyY thin cross section and providedV A with' a perforation near its upper end through i? which the` head partiallyeXtends,' meansyfor .golf

hingedly connecting theyjaws `todOne ann Y othern and 'means carriedy by the stem'orY clamping the jaws upon! a trolley'wire.V

ingfa threadedfstud depending therefrom,- a

' `5.111 a device' of the class described' the 'Y 'l Vcombination of. an insulatingssup'port hav- Y f stem havingfahead'at onefend threadedlyl the flange through l.which theJ headpartially eXten ds, means Vhingedly connecting the jaws 'atits .upper end and Van opening VadjacentV 105ml' I to .one another, a loose washer surrounding j thel stem and contacting the flanges :on the jaws, *and* a .clamping nutfthreadedly rei 'aws.

head at one end,'thehead khaving a {p airof spaced' abutment shoulders thereon7 v:a.pairr 6. In ya trlley''Wire suspension 'clamp combination with a threaded stem having a of jaws carriedv by the head, each .pairl ojVv`r jaws having'apluralityiot1 perforatedhinge 115; lugs formed thereon in aXial alignrhe'n tV with4 the abutment shoulders carried kby the head, L 4and hinge 'pins Y-extending through the f aligned peri'orate hinge'lugs, one of the pins entering the Vspace betwee'n'the abutment shoulders carried bythe 'head and co-oper ating withthe shoulders to provide: limitedv f movement of thefjaws onthe threaded stem. 7 In' aY trolley wire., suspension' clarn'p'fthev 'combination'lwith an externally, threaded,VV Y stem having. ahead, of apair fof hi'ngedl'y connected.jaws,a nut for clampingthea'wsfY Vuponv a trolley Ywire and threadedly lreceived by the stem, `and a substantially flat fr "eelyfQAv` V rotatable member hfavingxsmoothV abutting` "vedf by the Stems the 'mltibeingadarted- 195 to clamp-.thejaws on atrolley wire and'com. y 'tactggth' Washr to prevent wearonithe yon the nut may be rtranslated 'into the clamp-v surfaces *disposedy between the jaws andthe clamping nut'to prevent wear onthejaws. 8.1 In. a device of the class/described the Y combination n ofy anf externally .threaded l Y j Y v K i Y l `combination of astemV having a ksemi-globular head,a pairY of clamping jaws mounted stern, a pair of clamping jaws carriedl by the stem, a clamping nuty vthreadedly received by the stem, and a loose-collar; having iinished surfaces thereonbetween lthe nut and In testimony whereof, we have yhereunto subscribed out names thisy 20th day ofjJan-'rv j! LvrnvVV JOHNSTON. f

uary, 1928. v

the jaws, whereby the clamping nut may -be j Y freely actuatedv and whereby allk the 'strain ing effectof the jaws.` Y

I9.In'a device of the class described, `combination of as tem havingia headat one yend, a lpair 'of clamping jaws mounted .fon

thestem 'about the head, each jaw having va flange at one end thereof and yal body por-. Y I

tion extending rfrom the flange, each jawf havingi. substantially 'parallel innerl and outer surfaces andfbein providedwith'a .perforation therein adjacent vthe "flange through Vwhich the head of the stemk partiallyextends, and means for clamping the jawsupon one another.. f v

10.*- In a device of the class described the Y on ythe semi-globularhead, eachy jaw having ia plurality' of perforated' Ahinge'ulugs l1n v axial alignment, theY perforated lugs' being l f f aligned with the semi-globulary head, thei `head having formed therein a recess' whereby apair ofvshoulders are,-fc' rmedL on `,the

' head, and a pair of hinge `pinsv extending e throughV the aligned perforated hingelugs, one ofthe pins extending into the recess in f the head and contacting.the'shoulders' on (the head. Y

11.' In a 'trolleywire suspension cilampthe i' combination of a threaded p stem, a pairofA relatively movable clamp yj aws supported by, thestem, anoutwardly extending flange on'y each jaw presenting widely*spaeedupjoerr y contact v surfaces, a nut'k engaging Y the threaded stem vsaid nut having y'an enlarged lower surface,and a smooth faced Y washer disposed between the lower surface of thev nutY "and the upper l"surfaces of the Vjaw Iiangves,v the washer serving rto translate into clamping force vupon the 'jaws substantially allof ythe strain imposed thereuponby the`A nut, saidV lwasher providing also a 'smooth' y surface rupon which the extending flanges may slide outwardly during v,theclamping Y,

operation; .y y A 12. In a device of the'elass Ydescribed-the combination of a `stem `having aheadftherel on,l a'pair of perforateclamping jaws each comprising a dependingl jaw portion and a v 'flange extending therefromY substantially` at, Y

FRANCIS A TIGE 13uY l 

